Valve trip mechanism



June 23. 1925.

A. MILLER ET AL VALVE TRIP MECHANI SM Filed May 15, 1924 gnvcnl ozs f7. Nil/6i fr. 1. Wills Patented June 23, 1925.

UNITED STATES PATENT OFFICE.

ANDREW MILLER AND FRED D. MILLS, OF CANEY, KANSAS.

VALVE TRIP MECHANISM.

Application filed May 15,

"- the tubing of a deep well while thetubing is being pulled. v

Another object of the inventionis to provide a novel and improved mechanism of this generalcharacter particularly adapted for coaction with the working barrel of a deep oil well wherein means are provided to operate automatically to trip the valve within the working barrel upon upward movement of the working barrel as effected by pulling on the tubing.

The invention consists in the details of construction and in the combination and arrangement of the several parts of our improved valve trip mechanism whereby certain important advantages are attained and the device rendered simpler, less expensive andotherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of our invention will hereinafter be definitely claimed.

In order that our invention may be the better understood, we will now proceed to describe the same with reference to the accompanying drawings, wherein Figure 1 is a view partly in section and partly in elevation illustrating a valve trip mechanism constructed in accordance with an embodiment of our invention;

Figure 2 is a view similar to Figure 1 but showing certain of the parts in a second position.

As disclosed in the accompanying drawings, 1 denotes a working barrel which, as is well-known, is adapted to be operatively engaged with the lower end portion of the tubing. Arranged within. the working barrel 1 is the valve structure 2 including a ball valve 3, the same being constructed and operating in a we11known manner.

Threaded upon the lower end portion of 1924. Serial no. 713, 22.

the barrel 1' is the. valve seat collar 4, the lower portion of its bore 5 being flared. The collar 4 is housed within an elongated slip sleeve 6 the upper end of which having threaded therein the collar 7 closely surrounding the barrel 1 but freely movable ilengthwise thereof. The lower end portion of the slip sleeve 6 has threaded thereon a collar'8 with which is also in threaded engagement the swedge nipple 9.

The valve seat collar 4 is provided therethrough with an opening 10, the upper end portion 11 of which being enlarged while the lower end of said opening communicates with a radially disposed groove or recess 12 in the lower portion of the collar 4. Freely disposed throughthe opening is a rod 14 constantly urged upward through the medium of the spring 15 herein disclosed as encircling the upper portion of-the' rod 14 and interposed between the bottom of the enlarged portion 11 of the opening 10 and the enlargement or head 16 carried by the rod 14. The lower opposite end portion of the rod 14 is pivotally engaged, as at 17, with an end portion of the lever 18, said end portion of the lever 18 extending within the groove or recess 12 and pivotally supported, as at 19, by the collar 4, said pivotal connection 19 being at a desired point intermediate the ends of the lever 18.

The opposite or inner end of the lever 18 is pivotally connected, as at 20, with the lower or outer end portion of a lift rod 21,

said lift rod extending within the valve' structure 2 and adapted to contact with and move the ball valve 3 into open position so that the oil or other fluid within the working barrel 1 and the tubing thereabove may be permitted to bleed or drain back into the well without wastage and especially when "the tubing is being pulled.

hen pull is imposed upon the barrel 1, the valve seat collar 4 will be pulled up against the collar 7 resulting in depression of the rod 14 and the resultant opposite movement of the lift rod 21 whereby the valve 3 is moved into open position. This is particularly desirable while pulling tubing from an oil well as it is assured in such operation without wastage as the oil within the barrel and associated tubing will readily drain or bleed back into the well.

The weight of the sleeve 6 and the parts directly associated therewith serve to main tain the valve 3 in such open position and SlllfiClGlli) to readily permit the valve 3 to seat.

Our improved mechanism may also be employed in connection with wells that sand up as by raising the barrel 1 a few feet, bleeding or draining of the barrel and tubing is permitted to prevent any sand that may be in thefluid Within the barrel and tubing to settle and stick the valves.

From the foregoing description it is thought to be Obvious that a valve trip mechanism constructed in accordance with our invention is particularly well adapted for use by reason of the convenience and facility with which it may be assen'ilo-led and operated, and it will also be obvious that v our invention is susceptible of some change and avalve structure therein, a sleeve slidably engaged with the working barrel, a valve seat collar carried by the working bdl'? rel and contained within the sleeve, and means carried by said collar and operable by contact with the sleeve upon pull on the barrel to open the valve within the barrel.

2. In combination with a working barrel and a valve structure therein, a sleeve slidably engaged with the working ban-e1, a Valve seat collar carried by the working barrel and contained within the sleeve, a rod disposed through the collar, a lever opeia tively engaged with. said rod, a lift rod operatively engaged with said lever and extending within the valve structure to effect an opening of the valve upon depres sion of the first named rod, said first named rod being adapted to contact with the sleeve upon pull on the barrel to effect a depression of said rod, and means for urging said first named rod in the opposite direction. V

In testimony whereof we hereunto aflix our signatures. l

ANDREW MILLER. FRED D. MILLQ. 

